titanium vs Ti

titanium and Ti both are nouns.

Word	Noun	Adjective	Verb	Adverb
titanium	Yes	No	No	No
Ti	Yes	No	No	No

As nouns, titanium and Ti are synonyms defined as:

titanium and Ti: a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite

Other synonyms of titanium include atomic number 22.

titanium (noun)	Ti (noun)
a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite	a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite